ga4_create_rollup_property_source_link

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description discloses it's a write operation with prerequisites, but lacks details on side effects, idempotency, or error behavior. No annotations supplement this, so the description carries the full burden.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences with no wasted words. The first sentence conveys action and constraints, the second lists prerequisites. Efficient structure.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with 4 parameters and no output schema, the description is adequate but fails to explain the return value or deeper context about rollup properties. A bit more detail would improve completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description adds little beyond mentioning the confirm requirement; the schema already describes parameters adequately.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool adds a source property to a rollup property, specifies it's a GA4 WRITE operation for GA4 360, and notes 'no update', differentiating it from the delete sibling.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

It mentions the required configuration flag and confirm parameter, indicating when to use. However, it does not explicitly exclude alternate tools like the delete counterpart or explain prerequisites.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.